Comedy is on the rise, both in the world of movies and on television -- new sitcoms are the undisputed winners of this fall's new offerings. "SNL" is responding -- and capitalizing -- by booking reliable hosts with tested comic ability.

Day starred in the summer hit "Horrible Bosses" with "SNL" castmember Jason Sudeikis this summer and the two had great chemistry. Plus, "Sunny" is one of the smartest, ad-lib-heavy shows on television.

Stone is a big-screen gem, not a small-screen one -- but she's already proven to "SNL" producers that she can handle the gig.

Stone did a bang-up job leading the show last October -- her Lindsay Lohan impression and turn in digital short "I Broke My Arm," in particular, drew accolades. Critics wished the writers had used her even more.

And Segel isn't just a mainstay on the scene (he's been around since "Freaks and Geeks") -- he's also more than at home in an ensemble setting, whether it's "How I Met Your Mother" or "Forgetting Sarah Marshall."